#include "stdlib.h"
#include "stdio.h"
#include "string.h"



void copy_str4_1(char *from, char *to)
{
	while((*to = *from) !='\0')
	{
		to++;
		from++;
	}
}

void main()
{
	char *p = "abcdefg";
	//char *p2 = NULL;
	char p2[100] ;
	copy_str5(p, p2);

	//strcpy(p2, "abcdeeg");
	printf("p2:%s\n", p2);

	system("pause");
}